observability added

[akshaydeo]

Summary

Added a new Observability section to the UI with support for OpenTelemetry, Maxim, Datadog, and New Relic integrations. Also refactored HTTP middleware handling to improve type safety and error handling.

Changes

• Added new Observability page with dedicated views for different monitoring platforms
• Created form components for configuring OTEL and Maxim integrations
• Refactored HTTP middleware to use a dedicated BifrostHTTPMiddleware type
• Enhanced middleware chain to properly handle early response termination
• Fixed duplicate cleanup path in Makefile
• Added enterprise fallback components for governance and cluster views
• Reorganized sidebar navigation with a dedicated Enterprise section

Type of change

• Bug fix
• Feature
• Refactor
• Documentation
• Chore/CI

Affected areas

• Core (Go)
• Transports (HTTP)
• Providers/Integrations
• Plugins
• UI (Next.js)
• Docs

How to test

Test the new Observability UI and middleware changes:

# Core/Transports
go version
go test ./...

# UI
cd ui
pnpm i || npm i
pnpm dev || npm run dev

Navigate to the new Observability page to verify the UI components render correctly.

Screenshots/Recordings

N/A

Breaking changes

• Yes
• No

Related issues

N/A

Security considerations

No significant security implications. The middleware refactoring improves request handling but doesn't change authentication or authorization logic.

Checklist

• I read docs/contributing/README.md and followed the guidelines
• I added/updated tests where appropriate
• I updated documentation where needed
• I verified builds succeed (Go and UI)
• I verified the CI pipeline passes locally if applicable

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✨ Finishing touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch observability

---

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[akshaydeo]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• adds backend for otel #501
• observability added #490 👈 (View in Graphite)
• updates package name for ui #485
• otel plugin, dynamic plugin reloads, new UI changes and a few bug fixes #470 : 4 other dependent PRs (#535 , #546 , #553 and 1 other)
• v1.3.0 #507 : 1 other dependent PR (#536 )
• main

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